MameCE runs fine on my Jornada. I installed it to the 'Program Files' directory on my Storage Card and then copied the roms to the 'Roms' folder of the MameCE directory. Make sure you have the old .36 roms. The newest ones that are "floating" around the net now won't work with MameCE. Although we all know you must own the game in order to "have" the ROMs... ;-)